remove leading underscore, fix next call in mongosave

dist/callchain.js

@@ -6,53 +6,68 @@ class LastChainItem {
     begin() {
     }
     send(message) {
-        log.info(`Last chain item, final result ${message}`);
+        log.info(`Last chain item, final result ${JSON.stringify(message)}`);
     }
 }
 let lastChainItem = new LastChainItem();
 class AChainItem extends events.EventEmitter {
     constructor(label) {
         super();
-        this._label = label;
-        this._next = lastChainItem;
+        this.label = label;
+        this.next = lastChainItem;
     }
     toString() {
-        return `<${this._label}>`;
+        return `<${this.label}>`;
     }
     registerNext(next) {
-        this._next = next;
+        this.next = next;
     }
     send(message) {
         this.emit('yourturn', message);
     }
 }
 exports.AChainItem = AChainItem;
+class AAsyncBaseChainItem extends AChainItem {
+    constructor(label) {
+        super(label);
+    }
+    begin() {
+        if (this.next != null) {
+            this.next.begin();
+        }
+        this.addListener('yourturn', (message) => {
+            log.info(`Calling ${this.toString()}`);
+            this.func(message, this.next.send);
+        });
+    }
+}
+exports.AAsyncBaseChainItem = AAsyncBaseChainItem;
 class ABaseChainItem extends AChainItem {
     constructor(label) {
         super(label);
     }
     begin() {
-        if (this._next != null) {
-            this._next.begin();
+        if (this.next != null) {
+            this.next.begin();
         }
         this.addListener('yourturn', (message) => {
             log.info(`Calling ${this.toString()}`);
             let result = this.func(message);
-            this._next.send(result);
+            this.next.send(result);
         });
     }
 }
 exports.ABaseChainItem = ABaseChainItem;
 class ChainItem extends ABaseChainItem {
     toString() {
-        let funcName = (this._chainItemFunc.name === "") ? "lambda" : this._chainItemFunc.name;
-        return `<${funcName}, ${this._label}>`;
+        let funcName = (this.chainItemFunc.name === "") ? "lambda" : this.chainItemFunc.name;
+        return `<${funcName}, ${this.label}>`;
     }
     registerFunc(func) {
-        this._chainItemFunc = func;
+        this.chainItemFunc = func;
     }
     func(message) {
-        return this._chainItemFunc(message);
+        return this.chainItemFunc(message);
     }
 }
 exports.ChainItem = ChainItem;